Jack



Nov. 14, 1944. G. L MAYBERRY J ACK Filed May 6, 1945 mdf/i641@ +266 AM Patented Nov. 14, 1944 UNITED STATES PATENT OFFICE 1 Claim.

(Granted under the m f March s, 1883, as

, amended April 30, 1928; 370 0.v G. 757) The invention described herein may be manu` factured and used by or for the Goverment for governmental purposes, without the payment to me of any royalty thereon.

This invention relates to a jack for use in aligning, positioning,.and to enable the tight fittingl of objects in relatively confined spaces.

The device hereinafter described has particular application and utility in the packing and storing of ammunition canisters, and will be so described, but it is to be understood that it is not to be so limited.

In the storing of ammunition canisters into freight cars certain rules and requirements of the Interstate Commerce Commission make it mandatory that wooden partitions be set up after a xed number of canisters have been loaded into the car. In this manner, within each freight car there will be several compartments each contain` ing a certain number of canisters, with each compartment being separated from the compartment next adjoining by a `wooden partitioning board.

In the past this has been accomplished by placing the partitioning` board against the end row of the canisters and by utilizing a crow bar or similar wedging device to force the board firmly against the canisters to a tight t position. -The board is vthen nailed to the oor of the freight car and another section of canisters is set up and a similar practice followed. It is obvious that' by the practice outlined above thelabors of two operators are required, one to keep the partitioning board in position with the crow bar, while the other nails the board to the iioor` of the car.

By. the utilization of the device forming my invention, I provided means whereby a single operator alone can perform each of the operations indicated above.

The invention can best be understood from the following description to be read in view of the accompanying drawing in which:

Fig. 1v is a side view of the preferred embodiment of the invention; and I Fig. 2 is a view of the device in its applicable use in a box car.

Fig. 3 is an end view of the device.

Referring to the drawing, I indicated one arm of the jack which tapers at oneend to form a handle 2. 'I'he other end of 'arm I is linked to a base board 3 by means of a pivot pin 4. At the distal endof base 3 there is secured thereto a pair of staking pins 5 adapted to be staked into the floor of the box car. .Linked to the arm I is another armS having an enlarged head 1. It is obvious that movement of the arm I about its pivot pin 4 will control the movement of arm B.

The operation of the device herein described Acan be set forth as follows: Canisters 8 are stacked upon the floor 9 of the box car in the manner shown. When a determinate amount of canisters is stacked a partitioning board I9 having an extended base portion I I is pressed against the canisters While at the same time base 3 of the device is staked vinto the floor utilizing the staking pins 5. The handle I is iirst drawn back and then pushed in the direction of the canisters causing arm 6 to press firmly against the partition board I0. Continual exertedpressure upon the handle I will force the canisters into as tight a t as necessary.v The extended base portion II of the partition board can then be nailed to the oor of the box car. After this is completed the arm I is drawn away from the canisters and arm 6 is thereby released and the apparatus is then ready for re-use.

While the device herein set forth has been described in its application to the floor of abox car,`it is obvious that it can be similarly adapted for use on the side walls of the ycar to serve the same purposes herein before described.

It will be noted that the base 3 of the jack is elongated sufliciently so that the operator may place his foot thereon between 'the lever pivot I and the Aspurs during the operation of the jack.

What is claimed as new is:

A jack comprising an elongated base, a lever pivotally mounted in a recess adjacent'the forward end of the base, said base being provided on its underside and solely at the end opposite the lever and remote from said lever, withr rearwardly projecting spurs for entering the base-support to stabilize the base, and a presser arm pivotally attached to the lever adjacent the base, said arm extending in advance of the base for engagement with an object to be positioned, said base being suiiiciently elongated so that the operators foot may be placed thereon between said lever pivot and said spurs during the operation of the jack.

GILBERT L. MAYBERRY. 

